IS200t tune
Pole Position
Joined: Jan 2018
Posts: 250
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From: Florida
93 or true race gas. I would not use e85 or mixtures as it requires more fuel. On the subject of the exhaust ports. The Honda motors went to the integrated manifold back in mid 2000’s on the v-6’s and a bit later on the 4 cylinders. Toyota also have done this on the new 2GR (2GR-FKS) this motor is in the new Camry, Tacoma, RX and GS. A turbocharged version will come in the LS500 likely designated 2GR-FTS. Interestingly the FKS has not found its way into the RC or IS.
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Joined: Jan 2017
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From: az
Is it stage two or stage two+? If it’s stage two then I’d use 91-93 oct. don’t use race gas, 100-110 would be overkill and if the ecu isn’t adjusted for it then it would just be a waste of race gas and money. If you have stage two plus then advise tony’ the tuner, he announced we could use ethanol mixtures if we changed spark plugs
Rookie
Joined: May 2017
Posts: 79
Likes: 4
From: California
Is it stage two or stage two+? If it’s stage two then I’d use 91-93 oct. don’t use race gas, 100-110 would be overkill and if the ecu isn’t adjusted for it then it would just be a waste of race gas and money. If you have stage two plus then advise tony’ the tuner, he announced we could use ethanol mixtures if we changed spark plugs
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Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
That's unfortunate
Thread Starter
Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
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Joined: Jan 2017
Posts: 519
Likes: 93
From: az
Well that’s still good seeing he could atleast do something. I think it’s all about r&d you’ll need hours on the dyno. I really feel like you need a catted downpipe like you said our platform favors back pressure. Your tq is really low even for a stock tune it’s already around 245wtq, under rated at 280crank. How many dyno runs did you do?
Last edited by IS200TFOWL; Jan 15, 2018 at 03:19 PM.
Thread Starter
Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
Well that’s still good seeing he could atleast do something. I think it’s all about r&d you’ll need hours on the dyno. I really feel like you need a catted downpipe like you said our platform favors back pressure. Your tq is really low even for a stock tune it’s already around 245wtq, under rated at 280crank. How many dyno runs did you do?
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Joined: Jan 2017
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From: az
With this tuning program it definitely needs time for R&D since the tables don't have any definite values . The boost table just has a bunch of numbers with no actual value such as psi or bar, so its hard to figure out what to add (kudos to Tony and TTi). He adjusted the fuel at certain areas, but then we were faced with another table that will re-adjust the changes, so in all theres a lot of protection/limitation on the stock ECU that avoids you from really getting those parameters locked in. With a bit more time and research he will be able to figure out the tables and then we will try it again. We had 3 hours on the dyno and made around 5-6 passes since most of the time was spent figuring out the tables and then writing the file. I did see a drop in torque with the de-catted down pipe, but it did pick up some power up top, also if you look at the runs they were all done at a higher rpm and our car makes peak torque really early in the rpm range. We did have a discussion that if we are unable to find a way around the limitations or get a better tuning program we will then try to do a custom tune with the BMS since it makes a lot of wtq and we will adjust the a/f ratio up top to help with peak whp.
Yeah it sounds like your tuner just needs to become more comfortable tuning your car. When I hit the dyno I could do 10 runs in 30 minutes so you guys definitely took your time. I’ve watched tuners tune maps in less than 5 minutes in between each dyno. Sometimes tuners think they’ve gotta wait 30 minutes in between each run to let the car cool down but when it comes down to it any gains while it’s hot are going to be even better then it’s cold
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Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
We definitely took our time. He was also requesting maps from the program manufacturer to enable rev limiter and so on, but it didn’t get to us on time. In all it was a learning experience and I only spent $100 for 3 hours at the shop which was good since the tuner doesn’t want to charge me until he sees results.